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Yes, open mind is OK... but to a good measure.
The saying "they didn't know it's impossible so they just did it" simply doesn't work.
I remember a discussion here couple of years ago about "programmable" filters...
There was a guy on the forum with idea to use colour LCD as monochromatic narrow band filter.., No argument was acceptable to him because from the start he didn't understand the difference between colours as perceived and colours in spectrum of light.
I gave up explaining and he said he will come back to report success.. which never eventuated.
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